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* Pull pvops into release branchTony Luck2008-07-17
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| * [IA64] pv_ops: move some functions in ivt.S to avoid lack of space.Isaku Yamahata2008-05-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | move interrupt, page_fault, non_syscall, dispatch_unaligned_handler and dispatch_to_fault_handler to avoid lack of instructin space. The change set 4dcc29e1574d88f4465ba865ed82800032f76418 bloated SAVE_MIN_WITH_COVER, SAVE_MIN_WITH_COVER_R19 so that it bloated the functions which uses those macros. In the native case, only dispatch_illegal_op_fault had to be moved. When paravirtualized case the all functions which use the macros need to be moved to avoid the lack of space. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: documentation on ia64/pv_opsIsaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | Documentation on ia64/pv_ops which describes its strategy and implementation. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Cc: Gerald Pfeifer <gp@novell.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: add to hooks, pv_time_ops, for steal time accounting.Isaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | Introduce pv_time_ops which adds hook to steal time accounting. On virtualized environment, cpus are shared by many guests and steal time is the time which is used for other guests. On virtualized environtment, streal time should be accounted. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: add hooks, pv_irq_ops, to paravirtualized irq related operations.Isaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | | | | | | | introduce pv_irq_ops which adds hooks to paravirtualize irq related operations. On virtualized environment, interruption may be replaced by something virtualization friendly. So the irq related operation also may need paravirtualization. This patch adds necessary hooks to paravirtualize irq related operations. Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: add hooks, pv_iosapic_ops, to paravirtualize iosapic.Isaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | add hooks to paravirtualize iosapic which is a real hardware resource. On virtualized environment it may be replaced something virtualized friendly. Define pv_iosapic_ops and add the hooks. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: define initialization hooks, pv_init_ops, for paravirtualized ↵Isaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | | | environment. define pv_init_ops hooks which represents various initialization hooks for paravirtualized environment. and add hooks. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: paravirtualize NR_IRQSIsaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | | | Make NR_IRQ overridable by each pv instances. Pv instance may need each own number of irqs so that NR_IRQS should be the maximum number of nr_irqs each pv instances need. Cc: Jes Sorensen <jes@sgi.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: paravirtualize entry.SIsaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | | | | | | | paravirtualize ia64_swtich_to, ia64_leave_syscall and ia64_leave_kernel. They include sensitive or performance critical privileged instructions so that they need paravirtualization. To paravirtualize them by single source and multi compile they are converted into indirect jump. And define each pv instances. Cc: Keith Owens <kaos@ocs.com.au> Cc: "Dong, Eddie" <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: paravirtualize ivt.SIsaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | paravirtualize ivt.S which implements fault handler in hand written assembly code. They includes sensitive or performance critical privileged instructions. So they need paravirtualization. Cc: Keith Owens <kaos@ocs.com.au> Cc: tgingold@free.fr Cc: Akio Takebe <takebe_akio@jp.fujitsu.com> Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: paravirtualize minstate.h.Isaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | | | | | paravirtualize minstate.h which are hand written assembly code. They include sensitive or performance critical privileged instructions. So that they are appropriate for paravirtualization. Cc: Keith Owens <kaos@ocs.com.au> Cc: Akio Takebe <takebe_akio@jp.fujitsu.com> Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: define paravirtualized instructions for native.Isaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | pv_cpu_asm_ops: define paravirtualized introduce for native execution environment. Cc: Keith Owens <kaos@ocs.com.au> Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: preparation for paravirtulization of hand written assembly code.Isaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | | | | | Preparation for paravirtualization of hand written assembly code. They are paravirtualized by single source code and compiled multi times. To tell those files for target (including native), add one defines. Cc: "Dong, Eddie" <eddie.dong@intel.com> Cc: Keith Owens <kaos@ocs.com.au> Cc: tgingold@free.fr Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: introduce pv_cpu_ops to paravirtualize privileged instructions.Isaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | | | introduce pv_cpu_ops to paravirtualize privleged instructions which are defined by ia64 intrinsics. make them indirect C function calls by introducing function tables, pv_cpu_ops. Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: add an early setup hook for pv_ops.Isaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | This patch adds a setup hook in the very early boot sequence before start_kernel() to initialize paravirtualization stuff. The hook will be set by each pv loader code or by using multi entry point. Signed-off-by: Qing He <qing.he@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: introduce pv_info which describes some random info.Isaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | introduce pv_info which describes some randome info about underlying execution environment. Cc: Jes Sorensen <jes@sgi.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: preparation: introduce ia64_get_psr_i() to make kernel ↵Isaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | | | | | paravirtualization friendly. __local_irq_save() and local_save_flags() are used to mask interruptions. They read all psr bits that requres whole bit emulation. On the other hand, reading only psr.i, the single bit, can be virtualized cheaply. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: preparation: introduce ia64_set_rr0_to_rr4() to make kernel ↵Isaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | | | paravirtualization friendly. make kernel paravirtualization friendly by introducing ia64_set_rr0_to_rr4(). ia64/Xen will replace setting rr[0-4] with single hypercall later. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: preparation: move the constants, LOAD_OFFSET, to a header file.Isaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the LOAD_OFFSET definition from vmlinux.lds.S into system.h. On paravirtualized environments, it is necessary to detect the execution environment. One of the solutions is the multi entry point. The multi entry point allows a boot loader to start the kernel execution from the entry point which is different from the ELF entry point. The non standard entry point will defined as the specialized elf note which contains the LMA of the entry point symbol. The constant, LOAD_OFFSET, is necessary to calculate the symbol's LMA. Move the definition into the public header file to make it available to the multi entry point support. Cc: "He, Qing" <qing.he@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] pvops: preparation: remove extern in irq_ia64.cIsaku Yamahata2008-05-27
| | | | | | | | | | | | | | | | | | remove extern declaration of handle_IPI() in irq_ia64.c. Instead, declare it in asm-ia64/smp.h. Later handle_IPI() will be referenced from another file. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2008-07-17
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: fix asm/e820.h for userspace inclusion x86: fix numaq_tsc_disable x86: fix kernel_physical_mapping_init() for large x86 systems
| * | x86: fix asm/e820.h for userspace inclusionRusty Russell2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | asm-x86/e820.h is included from userspace. 'x86: make e820.c to have common functions' (b79cd8f1268bab57ff85b19d131f7f23deab2dee) broke it: make -C Documentation/lguest cc -Wall -Wmissing-declarations -Wmissing-prototypes -O3 -I../../include lguest.c -lz -o lguest In file included from ../../include/asm-x86/bootparam.h:8, from lguest.c:45: ../../include/asm/e820.h:66: error: expected ‘)’ before ‘start’ ../../include/asm/e820.h:67: error: expected ‘)’ before ‘start’ ../../include/asm/e820.h:68: error: expected ‘)’ before ‘start’ ../../include/asm/e820.h:72: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘e820_update_range’ ... Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: fix numaq_tsc_disableYinghai Lu2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fix: arch/x86/kernel/numaq_32.c: In function ‘numaq_tsc_disable’: arch/x86/kernel/numaq_32.c:99: warning: ‘return’ with a value, in function returning void Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | Merge branch 'linus' into x86/urgentIngo Molnar2008-07-17
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| * | | x86: fix kernel_physical_mapping_init() for large x86 systemsJack Steiner2008-07-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix bug in kernel_physical_mapping_init() that causes kernel page table to be built incorrectly for systems with greater than 512GB of memory. Signed-off-by: Jack Steiner <steiner@sgi.com> Cc: linux-mm@kvack.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds2008-07-17
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: ftrace: do not trace library functions ftrace: do not trace scheduler functions ftrace: fix lockup with MAXSMP ftrace: fix merge buglet
| * | | | ftrace: do not trace library functionsIngo Molnar2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | make function tracing more robust: do not trace library functions. We've already got a sizable list of exceptions: ifdef CONFIG_FTRACE # Do not profile string.o, since it may be used in early boot or vdso CFLAGS_REMOVE_string.o = -pg # Also do not profile any debug utilities CFLAGS_REMOVE_spinlock_debug.o = -pg CFLAGS_REMOVE_list_debug.o = -pg CFLAGS_REMOVE_debugobjects.o = -pg CFLAGS_REMOVE_find_next_bit.o = -pg CFLAGS_REMOVE_cpumask.o = -pg CFLAGS_REMOVE_bitmap.o = -pg endif ... and the pattern has been that random library functionality showed up in ftrace's critical path (outside of its recursion check), causing hard to debug lockups. So be a bit defensive about it and exclude all lib/*.o functions by default. It's not that they are overly interesting for tracing purposes anyway. Specific ones can still be traced, in an opt-in manner. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | ftrace: do not trace scheduler functionsIngo Molnar2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | do not trace scheduler functions - it's still a bit fragile and can lock up with: http://redhat.com/~mingo/misc/config-Thu_Jul_17_13_34_52_CEST_2008 Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | ftrace: fix lockup with MAXSMPIngo Molnar2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MAXSMP brings in lots of use of various bitops in smp_processor_id() and friends - causing ftrace to lock up during bootup: calling anon_inode_init+0x0/0x130 initcall anon_inode_init+0x0/0x130 returned 0 after 0 msecs calling acpi_event_init+0x0/0x57 [ hard hang ] So exclude the bitops facilities from tracing. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | ftrace: fix merge bugletIngo Molnar2008-07-17
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -tip testing found a bootup hang here: initcall anon_inode_init+0x0/0x130 returned 0 after 0 msecs calling acpi_event_init+0x0/0x57 the bootup should have continued with: initcall acpi_event_init+0x0/0x57 returned 0 after 45 msecs but it hung hard there instead. bisection led to this commit: | commit 5806b81ac1c0c52665b91723fd4146a4f86e386b | Merge: d14c8a6... 6712e29... | Author: Ingo Molnar <mingo@elte.hu> | Date: Mon Jul 14 16:11:52 2008 +0200 | Merge branch 'auto-ftrace-next' into tracing/for-linus turns out that i made this mistake in the merge: ifdef CONFIG_FTRACE # Do not profile debug utilities CFLAGS_REMOVE_tsc_64.o = -pg CFLAGS_REMOVE_tsc_32.o = -pg those two files got unified meanwhile - so the dont-profile annotation got lost. The proper rule is: CFLAGS_REMOVE_tsc.o = -pg i guess this could have been caught sooner if the CFLAGS_REMOVE* kbuild rule aborted the build if it met a target that does not exist anymore? Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | fix build error of arch/ia64/kvm/*Takashi Iwai2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix calls of smp_call_function*() in arch/ia64/kvm for recent API changes. CC [M] arch/ia64/kvm/kvm-ia64.o arch/ia64/kvm/kvm-ia64.c: In function 'handle_global_purge': arch/ia64/kvm/kvm-ia64.c:398: error: too many arguments to function 'smp_call_function_single' arch/ia64/kvm/kvm-ia64.c: In function 'kvm_vcpu_kick': arch/ia64/kvm/kvm-ia64.c:1696: error: too many arguments to function 'smp_call_function_single' Signed-off-by: Takashi Iwai <tiwai@suse.de> Acked-by Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'ptrace-cleanup' of ↵Linus Torvalds2008-07-17
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-utrace * 'ptrace-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-utrace: fix dangling zombie when new parent ignores children do_wait: return security_task_wait() error code in place of -ECHILD ptrace children revamp do_wait reorganization
| * | | | fix dangling zombie when new parent ignores childrenRoland McGrath2008-07-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes an arcane bug that we think was a regression introduced by commit b2b2cbc4b2a2f389442549399a993a8306420baf. When a parent ignores SIGCHLD (or uses SA_NOCLDWAIT), its children would self-reap but they don't if it's using ptrace on them. When the parent thread later exits and ceases to ptrace a child but leaves other live threads in the parent's thread group, any zombie children are left dangling. The fix makes them self-reap then, as they would have done earlier if ptrace had not been in use. Signed-off-by: Roland McGrath <roland@redhat.com>
| * | | | do_wait: return security_task_wait() error code in place of -ECHILDRoland McGrath2008-07-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts the effect of commit f2cc3eb133baa2e9dc8efd40f417106b2ee520f3 "do_wait: fix security checks". That change reverted the effect of commit 73243284463a761e04d69d22c7516b2be7de096c. The rationale for the original commit still stands. The inconsistent treatment of children hidden by ptrace was an unintended omission in the original change and in no way invalidates its purpose. This makes do_wait return the error returned by security_task_wait() (usually -EACCES) in place of -ECHILD when there are some children the caller would be able to wait for if not for the permission failure. A permission error will give the user a clue to look for security policy problems, rather than for mysterious wait bugs. Signed-off-by: Roland McGrath <roland@redhat.com>
| * | | | ptrace children revampRoland McGrath2008-07-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ptrace no longer fiddles with the children/sibling links, and the old ptrace_children list is gone. Now ptrace, whether of one's own children or another's via PTRACE_ATTACH, just uses the new ptraced list instead. There should be no user-visible difference that matters. The only change is the order in which do_wait() sees multiple stopped children and stopped ptrace attachees. Since wait_task_stopped() was changed earlier so it no longer reorders the children list, we already know this won't cause any new problems. Signed-off-by: Roland McGrath <roland@redhat.com>
| * | | | do_wait reorganizationRoland McGrath2008-07-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This breaks out the guts of do_wait into three subfunctions. The control flow is less nonobvious without so much goto. do_wait_thread and ptrace_do_wait contain the main work of the outer loop. wait_consider_task contains the main work of the inner loop. Signed-off-by: Roland McGrath <roland@redhat.com>
* | | | | Update scripts/Makefile.fwinst to cope with older makeDavid Woodhouse2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also fix unwanted rebuilds of the firmware/ihex2fw tool by including the .ihex2fw.cmd file when present. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Reported-and-tested-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds2008-07-17
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] dasd: use -EOPNOTSUPP instead of -ENOTSUPP [S390] qdio: new qdio driver. [S390] cio: Export chsc_error_from_response(). [S390] vmur: Fix return code handling. [S390] Fix stacktrace compile bug. [S390] Increase default warning stacksize. [S390] dasd: Fix cleanup in dasd_{fba,diag}_check_characteristics(). [S390] chsc headers userspace cleanup [S390] dasd: fix unsolicited SIM handling. [S390] zfcpdump: Make SCSI disk dump tool recognize storage holes
| * | | | | [S390] dasd: use -EOPNOTSUPP instead of -ENOTSUPPStefan Haberland2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | return value -ENOTSUPP is not valid in userspace context, use -EOPNOTSUPP instead Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * | | | | [S390] qdio: new qdio driver.Jan Glauber2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | List of major changes: - split qdio driver into several files - seperation of thin interrupt code - improved handling for multiple thin interrupt devices - inbound and outbound processing now always runs in tasklet context - significant less tasklet schedules per interrupt needed - merged qebsm with non-qebsm handling - cleanup qdio interface and added kerneldoc - coding style Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Utz Bacher <utz.bacher@de.ibm.com> Reviewed-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * | | | | [S390] cio: Export chsc_error_from_response().Cornelia Huck2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make chsc_error_from_response() available to chsc callers outside of chsc.c (namely qdio) to avoid duplicating error checking code. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * | | | | [S390] vmur: Fix return code handling.Frank Munzert2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use -EOPNOTSUPP instead of -ENOTSUPP. Signed-off-by: Frank Munzert <munzert@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | | | [S390] Fix stacktrace compile bug.Heiko Carstens2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add missing module.h include to fix this: CC arch/s390/kernel/stacktrace.o arch/s390/kernel/stacktrace.c:84: warning: data definition has no type or storage class arch/s390/kernel/stacktrace.c:84: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL_GPL' arch/s390/kernel/stacktrace.c:84: warning: parameter names (without types) in function declaration arch/s390/kernel/stacktrace.c:97: warning: data definition has no type or storage class arch/s390/kernel/stacktrace.c:97: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL_GPL' arch/s390/kernel/stacktrace.c:97: warning: parameter names (without types) in function declaration Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | | | [S390] Increase default warning stacksize.Heiko Carstens2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Compiling a kernel with allmodconfig or allyesconfig results in tons of gcc warnings, because the default maximum stacksize from which on gcc will emit a warning is just 256 bytes. Increase this to 2048, so these warnings don't distract from the real warnings that we need to watch at. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | | | [S390] dasd: Fix cleanup in dasd_{fba,diag}_check_characteristics().Cornelia Huck2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | | | [S390] chsc headers userspace cleanupAdrian Bunk2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kernel headers shouldn't expose functions to userspace. Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | | | [S390] dasd: fix unsolicited SIM handling.Stefan Haberland2008-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add missing schedule_bh and check that there is 32 bit sense data. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | | | [S390] zfcpdump: Make SCSI disk dump tool recognize storage holesFrank Munzert2008-07-17
| |/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kernel part of zfcpdump establishes a new debugfs file zcore/memmap which exports information on memory layout (start address and length of each memory chunk) to its userspace counterpart. Signed-off-by: Frank Munzert <munzert@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
* / / / / Fix collateral damage to top level MakefileGrant Likely2008-07-17
|/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch named "powerpc/mpc5121: Add clock driver", also contained an unrelated and bogus change to the top-level makefile. This patch backs out the bad bit. SHA1 of offending patch: 137e95906e294913fab02162e8a1948ade49acb5) Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Repented-by: John Rigby <jrigby@freescale.com> [ Heh. Normally I pick these out from the diffstats, but I guess I've grown to trust the ppc tree too much ;) - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | scsi_dh: Verify "dev" is a sdev before accessing it.Chandra Seetharaman2008-07-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Before accessing the device data structure in hardware handlers, make sure it is a indeed a sdev device. Yinghai Lu <yhlu.kernel@gmail.com> found the bug on Jul 16, 2008, and later tested/verified the following fix. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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